semi-circular groove 半圆型绳槽
brass semi-circular protractor 铜半圆规
horn semi-circular protractor 牛角半圆量角器
Semi-Circular Cruising Level 半圆制巡航空层 ; 半圆形巡航空层
semi circular path 半周轨道
Semi-circular rotary veneer 半圆旋切薄木
semi-circular parry 划半圆防守
Semi-circular bar 半圆吧台
ADJ Something that is semicircular has the shape of half a circle. 半圆形的
...a semicircular amphitheatre.
...一个半圆形露天竞技场。
The redesigned square now features a colorful modern art screen, public toilets, lighted pathways and semi-circular seating that forms a public amphitheater/performance space.
经过改造的广场上悬挂了色彩浓烈的现代艺术屏幕，公共洗手间，带灯的人行通道和半圆形座椅，构成了一个露天的表演空间。
In a dusty field in Kitui, eastern Kenya, farmers are being taught how to construct small, semi-circular barriers of earth that control the flow of water, slowing its run-off.
在肯尼亚东部的基图伊，尘土弥漫的田地里，农民们正学着建造小型的环形土坝，以此控制水量、减缓水分流失。
They are semi-circular or segmental and on a square plan, unlike the Gothic vault which is frequently rectangular.
他们是半圆形或节段性和方形计划不同的是哥特式拱顶通常是长方形。
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